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Dumb question about H2O pump
Dumb question about H2O pump
I replaced the tube that goes just under the water pump on a 2001
caravan. It is metal and then connects via flex rubber to the rad. I
think it maybe called a collector tube - not sure. In any event it had
to be replaced since it was totally corroded out, but the van is still
leaking - like a sieve!
It seems to be coming just on top of where that pipe fits in. I do not
think where it fits in is the water pump per se, since a replacement
pump does not have that flange, maybe some part of the engine casing
that the water pump fits into(?). I do not have a service manual and
have not ben able to find a picture of it all anywhere yet, so please
bear with me...
Is it possible that a water pump will leak fairly heavily, not just
drip...drip...drip? It is the original water pump with about 94K Kms
on it.
I am just trying to make sure I have everything in hand as much as
possible to actually fix the issue once I am in there since I have to
pull the sepentine belt and I think pry the engine a bit to get at
it...
thanks
I replaced the tube that goes just under the water pump on a 2001
caravan. It is metal and then connects via flex rubber to the rad. I
think it maybe called a collector tube - not sure. In any event it had
to be replaced since it was totally corroded out, but the van is still
leaking - like a sieve!
It seems to be coming just on top of where that pipe fits in. I do not
think where it fits in is the water pump per se, since a replacement
pump does not have that flange, maybe some part of the engine casing
that the water pump fits into(?). I do not have a service manual and
have not ben able to find a picture of it all anywhere yet, so please
bear with me...
Is it possible that a water pump will leak fairly heavily, not just
drip...drip...drip? It is the original water pump with about 94K Kms
on it.
I am just trying to make sure I have everything in hand as much as
possible to actually fix the issue once I am in there since I have to
pull the sepentine belt and I think pry the engine a bit to get at
it...
thanks
Re: Dumb question about H2O pump
I dont have any experience with a Caravan. I have a Dodge full sized van,
but that is a different thing.
A water pump traditionally CAN leak like a sieve. Under pressure, if the
packing around
the shaft fails, water can literally spray out.
I have also seen them so corroded on the inside that "leakage" would be an
understatement.
If you can get a mechanics "mirror on a stick", and a good light, maybe you
can spot
where the coolant is actually coming from.
Now, did the tube which you replaced fail from internal or external
corrosion?? If
internal, consider what may have happened to the inside of the water pump,
and also
to the Welch plugs (freeze plugs) which are pressed into the core wash
openings on the
sides of engines.
I dont have any experience with a Caravan. I have a Dodge full sized van,
but that is a different thing.
A water pump traditionally CAN leak like a sieve. Under pressure, if the
packing around
the shaft fails, water can literally spray out.
I have also seen them so corroded on the inside that "leakage" would be an
understatement.
If you can get a mechanics "mirror on a stick", and a good light, maybe you
can spot
where the coolant is actually coming from.
Now, did the tube which you replaced fail from internal or external
corrosion?? If
internal, consider what may have happened to the inside of the water pump,
and also
to the Welch plugs (freeze plugs) which are pressed into the core wash
openings on the
sides of engines.
Re: Dumb question about H2O pump
On May 3, 7:17 am, "BSAK...@hotmail . com " <BSAK...@hotmail . com > wrote:
> I replaced the tube that goes just under the water pump on a 2001
> caravan. It is metal and then connects via flex rubber to the rad. I
> think it maybe called a collector tube - not sure. In any event it had
> to be replaced since it was totally corroded out, but the van is still
> leaking - like a sieve!
>
> It seems to be coming just on top of where that pipe fits in. I do not
> think where it fits in is the water pump per se, since a replacement
> pump does not have that flange, maybe some part of the engine casing
> that the water pump fits into(?). I do not have a service manual and
> have not ben able to find a picture of it all anywhere yet, so please
> bear with me...
>
> Is it possible that a water pump will leak fairly heavily, not just
> drip...drip...drip? It is the original water pump with about 94K Kms
> on it.
>
> I am just trying to make sure I have everything in hand as much as
> possible to actually fix the issue once I am in there since I have to
> pull the sepentine belt and I think pry the engine a bit to get at
> it...
>
> thanks
Yes, water pumps fail by wearing the shaft seal, and begin to leak. If
you live in a cold weather climate, this happens sooner than in warmer
climes. It is a quite common problem here in Minnesota.
On May 3, 7:17 am, "BSAK...@hotmail . com " <BSAK...@hotmail . com > wrote:
> I replaced the tube that goes just under the water pump on a 2001
> caravan. It is metal and then connects via flex rubber to the rad. I
> think it maybe called a collector tube - not sure. In any event it had
> to be replaced since it was totally corroded out, but the van is still
> leaking - like a sieve!
>
> It seems to be coming just on top of where that pipe fits in. I do not
> think where it fits in is the water pump per se, since a replacement
> pump does not have that flange, maybe some part of the engine casing
> that the water pump fits into(?). I do not have a service manual and
> have not ben able to find a picture of it all anywhere yet, so please
> bear with me...
>
> Is it possible that a water pump will leak fairly heavily, not just
> drip...drip...drip? It is the original water pump with about 94K Kms
> on it.
>
> I am just trying to make sure I have everything in hand as much as
> possible to actually fix the issue once I am in there since I have to
> pull the sepentine belt and I think pry the engine a bit to get at
> it...
>
> thanks
Yes, water pumps fail by wearing the shaft seal, and begin to leak. If
you live in a cold weather climate, this happens sooner than in warmer
climes. It is a quite common problem here in Minnesota.
Re: Dumb question about H2O pump
On May 3, 9:40 am, Don Stauffer in Minnesota <stauf...@usfamily . net >
wrote:
> On May 3, 7:17 am, "BSAK...@hotmail . com " <BSAK...@hotmail . com > wrote:
>
>
>
>
>
> > I replaced the tube that goes just under the water pump on a 2001
> > caravan. It is metal and then connects via flex rubber to the rad. I
> > think it maybe called a collector tube - not sure. In any event it had
> > to be replaced since it was totally corroded out, but the van is still
> > leaking - like a sieve!
>
> > It seems to be coming just on top of where that pipe fits in. I do not
> > think where it fits in is the water pump per se, since a replacement
> > pump does not have that flange, maybe some part of the engine casing
> > that the water pump fits into(?). I do not have a service manual and
> > have not ben able to find a picture of it all anywhere yet, so please
> > bear with me...
>
> > Is it possible that a water pump will leak fairly heavily, not just
> > drip...drip...drip? It is the original water pump with about 94K Kms
> > on it.
>
> > I am just trying to make sure I have everything in hand as much as
> > possible to actually fix the issue once I am in there since I have to
> > pull the sepentine belt and I think pry the engine a bit to get at
> > it...
>
> > thanks
>
> Yes, water pumps fail by wearing the shaft seal, and begin to leak. If
> you live in a cold weather climate, this happens sooner than in warmer
> climes. It is a quite common problem here in Minnesota.- Hide quoted text =
-
>
> - Show quoted text -
I checked it out by grovelling around underneath the vehicle today.
The replacement pump they sell is an impeller and seal unit that bolts
between the pully and housing which is, in turn, bolted to the engine.
That housing is what the pipe bolts into. There is not much room, so
it appears you need to pry the engine a bit to give a tad more access
to replace it.
But the good news is (at least for this issue) that the pump was not
leaking. Bozo here, who is very far from a master mechanic, did not
know of the trick to use grease on the parts to ensure that the big O-
ring does not roll and bind or slip off the pipe unit.
I yanked it apart and found the O-ring had been mashed out of place
and not sealing properly. I looked everywhere, since the dealers parts
counters were closed and could not find a replacement, so I reformed
the mashed one and greased it all up properly and wiggled and pushed
it until all of a sudden it just sort of went POP and seated. I bolted
it up and - no leaks!
I am sure everyone except yours truly knew about the grease (not just
any kind since some will attack the rubber) but that is what fixed my
issue.
Thanks for taking the time to reply - appreciated.
Funny - the first time takes twice as long as the second time....
anyone notice!? lol.
On May 3, 9:40 am, Don Stauffer in Minnesota <stauf...@usfamily . net >
wrote:
> On May 3, 7:17 am, "BSAK...@hotmail . com " <BSAK...@hotmail . com > wrote:
>
>
>
>
>
> > I replaced the tube that goes just under the water pump on a 2001
> > caravan. It is metal and then connects via flex rubber to the rad. I
> > think it maybe called a collector tube - not sure. In any event it had
> > to be replaced since it was totally corroded out, but the van is still
> > leaking - like a sieve!
>
> > It seems to be coming just on top of where that pipe fits in. I do not
> > think where it fits in is the water pump per se, since a replacement
> > pump does not have that flange, maybe some part of the engine casing
> > that the water pump fits into(?). I do not have a service manual and
> > have not ben able to find a picture of it all anywhere yet, so please
> > bear with me...
>
> > Is it possible that a water pump will leak fairly heavily, not just
> > drip...drip...drip? It is the original water pump with about 94K Kms
> > on it.
>
> > I am just trying to make sure I have everything in hand as much as
> > possible to actually fix the issue once I am in there since I have to
> > pull the sepentine belt and I think pry the engine a bit to get at
> > it...
>
> > thanks
>
> Yes, water pumps fail by wearing the shaft seal, and begin to leak. If
> you live in a cold weather climate, this happens sooner than in warmer
> climes. It is a quite common problem here in Minnesota.- Hide quoted text =
-
>
> - Show quoted text -
I checked it out by grovelling around underneath the vehicle today.
The replacement pump they sell is an impeller and seal unit that bolts
between the pully and housing which is, in turn, bolted to the engine.
That housing is what the pipe bolts into. There is not much room, so
it appears you need to pry the engine a bit to give a tad more access
to replace it.
But the good news is (at least for this issue) that the pump was not
leaking. Bozo here, who is very far from a master mechanic, did not
know of the trick to use grease on the parts to ensure that the big O-
ring does not roll and bind or slip off the pipe unit.
I yanked it apart and found the O-ring had been mashed out of place
and not sealing properly. I looked everywhere, since the dealers parts
counters were closed and could not find a replacement, so I reformed
the mashed one and greased it all up properly and wiggled and pushed
it until all of a sudden it just sort of went POP and seated. I bolted
it up and - no leaks!
I am sure everyone except yours truly knew about the grease (not just
any kind since some will attack the rubber) but that is what fixed my
issue.
Thanks for taking the time to reply - appreciated.
Funny - the first time takes twice as long as the second time....
anyone notice!? lol.
Re: Dumb question about H2O pump
On Sat, 3 May 2008 15:46:17 -0700 (PDT), "BSAKing@hotmail . com "
<BSAKing@hotmail . com > wrote:
>On May 3, 9:40=A0am, Don Stauffer in Minnesota <stauf...@usfamily . net >
>wrote:
>> On May 3, 7:17 am, "BSAK...@hotmail . com " <BSAK...@hotmail . com > wrote:
>>
>>
>>
>>
>>
>> > I replaced the tube that goes just under the water pump on a 2001
>> > caravan. It is metal and then connects via flex rubber to the rad. I
>> > think it maybe called a collector tube - not sure. In any event it had
>> > to be replaced since it was totally corroded out, but the van is still
>> > leaking - like a sieve!
>>
>> > It seems to be coming just on top of where that pipe fits in. I do not
>> > think where it fits in is the water pump per se, since a replacement
>> > pump does not have that flange, maybe some part of the engine casing
>> > that the water pump fits into(?). I do not have a service manual and
>> > have not ben able to find a picture of it all anywhere yet, so please
>> > bear with me...
>>
>> > Is it possible that a water pump will leak fairly heavily, not just
>> > drip...drip...drip? It is the original water pump with about 94K Kms
>> > on it.
>>
>> > I am just trying to make sure I have everything in hand as much as
>> > possible to actually fix the issue once I am in there since I have to
>> > pull the sepentine belt and I think pry the engine a bit to get at
>> > it...
>>
>> > thanks
>>
>> Yes, water pumps fail by wearing the shaft seal, and begin to leak. If
>> you live in a cold weather climate, this happens sooner than in warmer
>> climes. It is a quite common problem here in Minnesota.- Hide quoted text =
>-
>>
>> - Show quoted text -
>
>I checked it out by grovelling around underneath the vehicle today.
>The replacement pump they sell is an impeller and seal unit that bolts
>between the pully and housing which is, in turn, bolted to the engine.
>That housing is what the pipe bolts into. There is not much room, so
>it appears you need to pry the engine a bit to give a tad more access
>to replace it.
>
>But the good news is (at least for this issue) that the pump was not
>leaking. Bozo here, who is very far from a master mechanic, did not
>know of the trick to use grease on the parts to ensure that the big O-
>ring does not roll and bind or slip off the pipe unit.
>
>I yanked it apart and found the O-ring had been mashed out of place
>and not sealing properly. I looked everywhere, since the dealers parts
>counters were closed and could not find a replacement, so I reformed
>the mashed one and greased it all up properly and wiggled and pushed
>it until all of a sudden it just sort of went POP and seated. I bolted
>it up and - no leaks!
>
>I am sure everyone except yours truly knew about the grease (not just
>any kind since some will attack the rubber) but that is what fixed my
>issue.
>
>Thanks for taking the time to reply - appreciated.
>
>Funny - the first time takes twice as long as the second time....
>anyone notice!? lol.
I haven't seen one of these before, but I would have used a silicon
grease.
Pete
On Sat, 3 May 2008 15:46:17 -0700 (PDT), "BSAKing@hotmail . com "
<BSAKing@hotmail . com > wrote:
>On May 3, 9:40=A0am, Don Stauffer in Minnesota <stauf...@usfamily . net >
>wrote:
>> On May 3, 7:17 am, "BSAK...@hotmail . com " <BSAK...@hotmail . com > wrote:
>>
>>
>>
>>
>>
>> > I replaced the tube that goes just under the water pump on a 2001
>> > caravan. It is metal and then connects via flex rubber to the rad. I
>> > think it maybe called a collector tube - not sure. In any event it had
>> > to be replaced since it was totally corroded out, but the van is still
>> > leaking - like a sieve!
>>
>> > It seems to be coming just on top of where that pipe fits in. I do not
>> > think where it fits in is the water pump per se, since a replacement
>> > pump does not have that flange, maybe some part of the engine casing
>> > that the water pump fits into(?). I do not have a service manual and
>> > have not ben able to find a picture of it all anywhere yet, so please
>> > bear with me...
>>
>> > Is it possible that a water pump will leak fairly heavily, not just
>> > drip...drip...drip? It is the original water pump with about 94K Kms
>> > on it.
>>
>> > I am just trying to make sure I have everything in hand as much as
>> > possible to actually fix the issue once I am in there since I have to
>> > pull the sepentine belt and I think pry the engine a bit to get at
>> > it...
>>
>> > thanks
>>
>> Yes, water pumps fail by wearing the shaft seal, and begin to leak. If
>> you live in a cold weather climate, this happens sooner than in warmer
>> climes. It is a quite common problem here in Minnesota.- Hide quoted text =
>-
>>
>> - Show quoted text -
>
>I checked it out by grovelling around underneath the vehicle today.
>The replacement pump they sell is an impeller and seal unit that bolts
>between the pully and housing which is, in turn, bolted to the engine.
>That housing is what the pipe bolts into. There is not much room, so
>it appears you need to pry the engine a bit to give a tad more access
>to replace it.
>
>But the good news is (at least for this issue) that the pump was not
>leaking. Bozo here, who is very far from a master mechanic, did not
>know of the trick to use grease on the parts to ensure that the big O-
>ring does not roll and bind or slip off the pipe unit.
>
>I yanked it apart and found the O-ring had been mashed out of place
>and not sealing properly. I looked everywhere, since the dealers parts
>counters were closed and could not find a replacement, so I reformed
>the mashed one and greased it all up properly and wiggled and pushed
>it until all of a sudden it just sort of went POP and seated. I bolted
>it up and - no leaks!
>
>I am sure everyone except yours truly knew about the grease (not just
>any kind since some will attack the rubber) but that is what fixed my
>issue.
>
>Thanks for taking the time to reply - appreciated.
>
>Funny - the first time takes twice as long as the second time....
>anyone notice!? lol.
I haven't seen one of these before, but I would have used a silicon
grease.
Pete
Re: Dumb question about H2O pump
<BSAKing@hotmail . com > wrote in message news:231e5024-6c97-426d-8d9c-
Thanks for taking the time to reply - appreciated.
Funny - the first time takes twice as long as the second time....
anyone notice!? lol.
Glad it is fixed...
You dont have to use grease if you can get the O-ring seal to slip in
without rolling,
but it can make things a lot easier.
I used to use Vaseline on seals like that (going back to automatic
transmission repair days, where Vaseline was one of the most available and
least destructive greases to use on elastomeric seals.)
Recently I got some air conditioning system lubricant/sealant which is a
polymer. It is
a little expensive but a drop goes a long long way. It does a really good
job on things
like this, as well as air conditioning O-rings for which it was developed
and marketed.
<BSAKing@hotmail . com > wrote in message news:231e5024-6c97-426d-8d9c-
Thanks for taking the time to reply - appreciated.
Funny - the first time takes twice as long as the second time....
anyone notice!? lol.
Glad it is fixed...
You dont have to use grease if you can get the O-ring seal to slip in
without rolling,
but it can make things a lot easier.
I used to use Vaseline on seals like that (going back to automatic
transmission repair days, where Vaseline was one of the most available and
least destructive greases to use on elastomeric seals.)
Recently I got some air conditioning system lubricant/sealant which is a
polymer. It is
a little expensive but a drop goes a long long way. It does a really good
job on things
like this, as well as air conditioning O-rings for which it was developed
and marketed.
